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arXiv 2203.02852hep-th
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三维de Sitter重力场的CFT解

CFT duals of three-dimensional de Sitter gravity

Yasuaki Hikida, Tatsuma Nishioka, Tadashi Takayanagi, Yusuke Taki

摘要:

给出了二维CFTs与三维de Sitter空间之间的一类dS/CFT对应.我们认为,这样的CFT包括SU $(2)$ WZW模型在临界水平极限$k\to -2$,这对应于经典的重力极限。我们可以通过考虑临界能级极限$k\to -N$中的SU $(N)$ WZW模型来推广这种dS/CFT,该极限是三维de Sitter空间上高自旋引力的对偶。我们确认,在这种建议的对偶性的经典配分函数在重力方面可以重现从CFT计算。我们还指出,在高自旋全息中已知的对偶关系提供了进一步的证据。此外,我们还分析了dS/CFT对应中的两点函数和纠缠熵。讨论了引力理论中可能的谱修正和量子修正。

英文摘要:

We present a class of dS/CFT correspondence between two-dimensional CFTs and three-dimensional de Sitter spaces. We argue that such a CFT includes an SU$(2)$ WZW model in the critical level limit $k\to -2$, which corresponds to the classical gravity limit. We can generalize this dS/CFT by considering the SU$(N)$ WZW model in the critical level limit $k\to -N$, dual to the higher-spin gravity on a three-dimensional de Sitter space. We confirm that under this proposed duality the classical partition function in the gravity side can be reproduced from CFT calculations. We also point out a duality relation known in higher-spin holography provides further evidence. Moreover, we analyze two-point functions and entanglement entropy in our dS/CFT correspondence. Possible spectrum and quantum corrections in the gravity theory are discussed.

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